ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29Cc1ccc%28cc106.3+g/mol%29C%28C%29C%28%3DO%29O/file?format=sdf&get3d=True -- CC%28C%29Cc1ccc%28cc106.3+g/mol%29C%28C%29C%28%3DO%29O could not be loaded.